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公开(公告)号：KR101765800B1
公开(公告)日：2017-08-23
申请号：KR1020150185013
申请日：2015-12-23
Applicant: 한국과학기술원
Abstract: 노이즈감쇄기술에기반한초저전력형불확실-IF 수신기및 이를이용한무선신호수신방법이개시된다. 안테나를통해무선수신된수신신호를 IF 주파수로발진하는발진신호와믹싱하여, IF대역의제1 신호및 이와 180도의위상차를갖는제2 신호를만든다. 스위칭포락선검출기는그 제1 및제2 신호를제1 및제2 입력단을통해동시에입력받는다. 제1 신호는제2 신호와출력단쪽에서피드백받은신호를이용하여스위칭하고, 제2 신호는제1 신호와출력단쪽에서피드백받은신호를이용하여스위칭한다. 제1 신호와제2 신호는셀프-믹싱(self-mixing)을통해 DC 베이스밴드신호로주파수변환되어출력단으로출력된다. 특히, 제1 및제2 입력단에정상적인신호가입력될때에는제1 및제2 입력단에연결된제1 및상기제2 스위칭소자의동작점을낮추어주고, 노이즈가입력될때에는그 동작점음높여주는바이어스제어를함으로써, 출력신호에대한노이즈의영향력을최소화한다.
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公开(公告)号：KR1020030005453A
公开(公告)日：2003-01-23
申请号：KR1020010040747
申请日：2001-07-09
Applicant: 한국과학기술원
CPC classification number: C08F10/02 , C08F4/65912 , C08F4/6592 , C08F110/02 , Y10S502/507 , Y10S526/904 , C08F4/65916
Abstract: PURPOSE: A method for preparing a highly active polymer dipped metallocene catalyst for the polymerization of olefins, a highly active polymer dipped metallocene catalyst prepared by the method, a polymerization method of alkylene using the catalyst and a polymerization method of alkylene and α-olefin using the catalyst are provided, which catalyst can be used in an ethylene polymerization and a styrene polymerization. CONSTITUTION: The preparation method of the catalyst comprises the steps of dissolving a divinyl benzene monomer, a vinyl benzyl chloride monomer and an initiator into an organic solvent, mixing the solution with an aqueous suspension stabilizer and preparing a polystyrene by suspension polymerization at 40-80 deg.C; swelling the polystyrene in an organic solvent where dialcoholamine is dissolved, at a room temperature for 1-3 days, to obtain a polymer having the function of dialcoholamine; and reacting the obtained polymer with an organic solvent where a metallocene compound CpM*Cl3 is dissolved. Preferably the organic solvent of the first, second and third steps are toluene, dioxane and ether or toluene, respectively. The metallocene compound contains Ti, Zr of Hf.
Abstract translation: 目的：制备用于烯烃聚合的高活性聚合物浸渍茂金属催化剂的方法，通过该方法制备的高活性聚合物浸渍茂金属催化剂，使用该催化剂的亚烷基聚合方法和使用烯烃和α-烯烃的聚合方法 提供催化剂，该催化剂可用于乙烯聚合和苯乙烯聚合。 构成：催化剂的制备方法包括以下步骤：将二乙烯基苯单体，乙烯基苄基氯单体和引发剂溶解在有机溶剂中，将该溶液与水性悬浮稳定剂混合，并通过40-80℃的悬浮聚合制备聚苯乙烯 ℃温度; 在室温下溶解有二次醇胺的有机溶剂中的聚苯乙烯溶胀1-3天，得到具有二醇胺功能的聚合物; 并使得到的聚合物与茂金属化合物CpM * Cl3溶解的有机溶剂反应。 优选地，第一，第二和第三步的有机溶剂分别是甲苯，二恶烷和乙醚或甲苯。 茂金属化合物含有Hf的Hf，Ti。
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公开(公告)号：KR101358076B1
公开(公告)日：2014-02-05
申请号：KR1020120038608
申请日：2012-04-13
Applicant: 한국과학기술원
IPC: G01K7/01
CPC classification number: G01K7/34 , G01K7/01 , G01K2219/00
Abstract: 완화 오실레이터를 기초로 온도를 측정하는 온도 센서로서, 온도가 높아지면 증가하는 바이어스 전류를 출력하는 바이어스 회로부, 바이어스 전류에 의해 캐패시터를 충전하고, 제어 신호를 수신하는 경우 캐패시터를 방전하는 캐패시터 전압부, 캐패시터의 전압이 기준전압보다 높으면 펄스를 출력하고, 펄스의 펄스폭을 가변하며, 캐패시터 전압부로 제어 신호에 해당하는 펄스를 전달하는 펄스 생성부, 그리고 기준주파수를 기초로 펄스 생성부에서 출력한 펄스의 수를 세어 디지털값으로 출력하는 카운터부를 포함한다.
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Patent Agency Ranking
公开(公告)号：KR1020130115871A
公开(公告)日：2013-10-22
申请号：KR1020120038608
申请日：2012-04-13
Applicant: 한국과학기술원
IPC: G01K7/01
CPC classification number: G01K7/34 , G01K7/01 , G01K2219/00
Abstract: PURPOSE: A temperature sensor and a temperature measuring method using the same are provided to reduce the power consumption of the temperature and to improve the linearity of the temperature sensor, thereby improving the accuracy of a digital output. CONSTITUTION: A temperature sensor (100) includes a bias circuit unit (200), a capacitor voltage unit (300), a pulse generator (500), and a counter unit (600). The bias circuit unit outputs a bias current which becomes increased when the temperature is increased. The capacitor voltage unit charges a capacitor (310) with the bias current and discharges the capacitor when receiving control signals. The pulse generator outputs pulses when a voltage of the capacitor is higher than a reference voltage, varies the width of the pulses, and transmits the pulses corresponding to the control signals to the counter unit. The counter unit counts the number of the pulses outputted by the pulse generating unit based on a reference frequency and digitalizes. [Reference numerals] (200) Bias circuit unit; (500) Pulse generator; (600) Counter unit; (700) Reference frequency generating unit; (AA) Reset pulse
Abstract translation: 目的：提供一种温度传感器和使用其的温度测量方法，以降低温度的功率消耗并提高温度传感器的线性度，从而提高数字输出的精度。 构成：温度传感器（100）包括偏置电路单元（200），电容器电压单元（300），脉冲发生器（500）和计数器单元（600）。 偏置电路单元输出当温度升高时增加的偏置电流。 电容器电压单元用偏置电流对电容器（310）充电，并在接收到控制信号时对电容器放电。 当电容器的电压高于参考电压时，脉冲发生器输出脉冲，改变脉冲的宽度，并将对应于控制信号的脉冲发送到计数器单元。 计数器单元基于参考频率对由脉冲发生单元输出的脉冲数进行计数，并进行数字化处理。 （附图标记）（200）偏置电路单元; （500）脉冲发生器; （600）计数器单元; （700）参考频率发生单元; （AA）复位脉冲
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公开(公告)号：KR100443383B1
公开(公告)日：2004-08-09
申请号：KR1020010040747
申请日：2001-07-09
Applicant: 한국과학기술원
CPC classification number: C08F10/02 , C08F4/65912 , C08F4/6592 , C08F110/02 , Y10S502/507 , Y10S526/904 , C08F4/65916
Abstract: The present invention relates to a process for preparing a highly active metallocene catalyst supported on polymer bead for olefin polymerization, a metallocene catalyst prepared by the said process and a method for alkylene polymerization by employing the said catalyst. The process for preparing a highly active metallocene catalyst supported on polymer bead for olefin polymerization which comprises the steps of: dissolving divinylbenzene, vinylbenzylchloride, and an initiator in an organic solvent, mixing it with a suspension stabilizer of aqueous phase, and carrying out suspension-polymerization at the temperature of 40 to 80° C. to obtain polystyrene; swelling the polystyrene in dialcoholamine dissolved in an organic solvent at ambient temperature for 1 to 3 days, to give a polymer having a functional group of dialcoholamine; and, reacting the polymer with a metallocene compound (CpM*Cl3) dissolved in an organic solvent. The metallocene catalyst of the present invention can be used widely for ethylene polymerization, styrene polymerization and copolymerization, while replacing the conventional homogeneous catalysts.
Abstract translation: 本发明涉及负载在用于烯烃聚合的聚合物珠上的高活性金属茂催化剂的制备方法，通过所述方法制备的茂金属催化剂和通过使用所述催化剂进行烯烃聚合的方法。 本发明提供一种烯烃聚合用小球负载高活性金属茂催化剂的制备方法，包括以下步骤：将二乙烯基苯，乙烯基苄基氯和引发剂溶解于有机溶剂中，将其与水相悬浮稳定剂混合， 在40至80℃的温度下聚合。 C.获得聚苯乙烯; 在环境温度下使聚苯乙烯在溶解于有机溶剂中的二醇胺中溶胀1至3天，得到具有二醇胺的官能团的聚合物; 并使聚合物与溶解在有机溶剂中的金属茂化合物（CpM * Cl 3）反应。 本发明的茂金属催化剂可以广泛用于乙烯聚合，苯乙烯聚合和共聚，同时替代常规的均相催化剂。
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公开(公告)号：KR1020170075404A
公开(公告)日：2017-07-03
申请号：KR1020150185013
申请日：2015-12-23
Applicant: 한국과학기술원
Abstract: 노이즈감쇄기술에기반한초저전력형불확실-IF 수신기및 이를이용한무선신호수신방법이개시된다. 안테나를통해무선수신된수신신호를 IF 주파수로발진하는발진신호와믹싱하여, IF대역의제1 신호및 이와 180도의위상차를갖는제2 신호를만든다. 스위칭포락선검출기는그 제1 및제2 신호를제1 및제2 입력단을통해동시에입력받는다. 제1 신호는제2 신호와출력단쪽에서피드백받은신호를이용하여스위칭하고, 제2 신호는제1 신호와출력단쪽에서피드백받은신호를이용하여스위칭한다. 제1 신호와제2 신호는셀프-믹싱(self-mixing)을통해 DC 베이스밴드신호로주파수변환되어출력단으로출력된다. 특히, 제1 및제2 입력단에정상적인신호가입력될때에는제1 및제2 입력단에연결된제1 및상기제2 스위칭소자의동작점을낮추어주고, 노이즈가입력될때에는그 동작점음높여주는바이어스제어를함으로써, 출력신호에대한노이즈의영향력을최소화한다.
Abstract translation: 公开了一种基于噪声衰减技术的超低功率不确定中频接收机和使用该接收机的无线信号接收方法。 将通过天线无线接收的接收信号与以IF频率振荡的振荡信号混合，从而生成IF频带的第一信号和与第一信号具有180度相位差的第二信号。 切换包络检测器通过第一和第二输入同时接收第一和第二信号。 使用第二信号和从输出端反馈的信号切换第一信号，并且使用第一信号和从输出端反馈的信号切换第二信号。 第一信号和第二信号通过自混频被变频为直流基带信号并输出到输出端。 特别是，当正常信号被输入到第一和第二输入端子时，连接到第一和第二输入端子的第一和第二开关元件的工作点降低，并且当输入噪声时， 最大限度地减少噪声对输出信号的影响。
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公开(公告)号：KR100476303B1
公开(公告)日：2005-03-15
申请号：KR1020010081816
申请日：2001-12-20
Applicant: 한국과학기술원
Abstract: 본 발명은 노르보넨 공중합체의 제조방법 및 동 방법에 의해 제조한 노르보넨 공중합체에 관한 것으로 보다 상세하게는 노르보넨과 노르보넨 유도체를 반응용매, 니켈 화합물계 촉매, 공촉매 존재하에서 공중합하여 노르보넨 공중합체를 제조하는 것을 특징으로 한다.
본 발명의 노르보넨 공중합체의 제조방법은 노르보넨 50 몰%∼97 몰%과 노르보넨 유도체 3 몰%∼50 몰%를 반응용매 20 밀리리터(㎖)∼60 밀리리터, 촉매 0.01 밀리몰(mmol)∼0.05 밀리몰, 공촉매 3 밀리몰∼10 밀리몰 존재하에서 공중합 하는 것을 특징으로 한다.
본 발명은 노르보넨 공중합체의 제조에 있어, 노르보넨과 노르보넨 유도체를 단량체로 하고 니켈 화합물계 촉매, 공촉매 존재하에서 공중합 하여 노르보넨 공중합체의 제조방법 제공을 목적으로 한다.-
公开(公告)号：KR1020030052016A
公开(公告)日：2003-06-26
申请号：KR1020010081816
申请日：2001-12-20
Applicant: 한국과학기술원
Abstract: PURPOSE: Provided are a method for producing norbornene copolymer which can produce norbornene copolymer by copolymerization in the presence of a reaction solvent, a nickel-containing catalyst and a co-catalyst and the norbornene copolymer produced thereby. CONSTITUTION: The method for producing norbornene copolymer includes the steps of copolymerizing 50 mole% to 97 mole% of norbornene and 3 mole% to 50 mole% of a norbornene derivative in the presence of a reaction solvent, a nickel-containing catalyst and a co-catalyst. The norbornene derivative is at least selected from 2-norbornene, 5-vinyl-2-norbornene, 5-butyl-2-norbornene, 5-methyl-2-norbornene, 5-hexyl-2-norbornene, dicyclopentadiene, 5-norbornene-2-endo-3-exo-dicarboxylic acid and 5-dimethylmethoxy norbornene. The solvent is any one selected from benzene, toluene, chlorobenzene, nitrobenzene, xylene, 1,1-dichloroethane, 1,2-dichloroethane and 1,2-dichloromethane. The nickel-containing catalyst is any one selected from nickel acetylacetonate, nickel-bis-acetylacetonate, nickel-bis cyclo octadiene and nickel-bisallyl. The co-catalyst is any one selected from organic aluminum halides, BF4, PF6, SbF6, B£C6H3(CF3)2|4 and methylaluminoxane(MAO).
Abstract translation: 目的：提供一种降冰片烯共聚物的制造方法，其可以通过在反应溶剂，含镍催化剂和助催化剂的存在下共聚制造降冰片烯共聚物，由此制造降冰片烯共聚物。 构成：降冰片烯共聚物的制造方法包括在反应溶剂，含镍催化剂和共聚物的存在下共聚50摩尔％〜97摩尔％的降冰片烯和3摩尔％〜50摩尔％的降冰片烯衍生物的工序 -催化剂。 降冰片烯衍生物至少选自2-降冰片烯，5-乙烯基-2-降冰片烯，5-丁基-2-降冰片烯，5-甲基-2-降冰片烯，5-己基-2-降冰片烯，二环戊二烯，5-降冰片烯 - 2-内-3-异二羧酸和5-二甲基甲氧基降冰片烯。 溶剂是选自苯，甲苯，氯苯，硝基苯，二甲苯，1,1-二氯乙烷，1,2-二氯乙烷和1,2-二氯甲烷中的任一种。 含镍催化剂是选自乙酰丙酮镍，双 - 乙酰丙酮镍，镍 - 双环辛二烯和镍 - 双烯丙基中的任何一种。 助催化剂是选自有机卤化铝，BF 4，PF 6，SbF 6，C 6 H 3（CF 3）2 | 4和甲基铝氧烷（MAO）中的任何一种。
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